Connected: An Internet Encyclopedia
RFC 821 - Verifying and Sending Scenario

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### Verifying and Sending Scenario

             R: 220 SU-SCORE.ARPA Simple Mail Transfer Service Ready
             S: HELO MIT-MC.ARPA
             R: 250 SU-SCORE.ARPA

             S: VRFY Crispin
             R: 250 Mark Crispin <Admin.MRC@SU-SCORE.ARPA>

             S: SEND FROM:<EAK@MIT-MC.ARPA>
             R: 250 OK

             S: RCPT TO:<Admin.MRC@SU-SCORE.ARPA>
             R: 250 OK

             S: DATA
             R: 354 Start mail input; end with <CRLF>.<CRLF>
             S: Blah blah blah...
             S: ...etc. etc. etc.
             S: .
             R: 250 OK

             S: QUIT
             R: 221 SU-SCORE.ARPA Service closing transmission channel

                                   Scenario 4

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Connected: An Internet Encyclopedia
RFC 821 - Verifying and Sending Scenario